The Loup (French pronunciation: [lu] ⓘ; Occitan: Lop) is a river in the Alpes-Maritimes department, Southeastern France.

With a length of 49 kilometres (30 mi), it ends in the Mediterranean Sea in Villeneuve-Loubet, near Cagnes-sur-Mer.

The water flow in the Loup was observed for a period of 34 years (1980-2013) in Villeneuve-Loubet, a commune in the Alpes-Maritimes department, located at its mouth at the Mediterranean Sea.

The river's catchment area is 289 km2 (112 sq mi),[2] and the average flow rate is 4.480 m3/s.

[5] The first free route in the gorge was Déversé Satanique, opened by Bernard Duterte in the mid-1980s.